The Board of Directors of Vaisala Corporation Resolved on Key Employees' Share-Based Incentive Plan Published: Feb 7, 2018 Stock Exchange Releases Vaisala Corporation Stock Exchange Release February 7, 2018 at 2:35 p.m. EET The Board of Directors of Vaisala Corporation Resolved on Key Employees' Share-Based Incentive Plan Vaisala's Board of Directors has resolved for the Group key employees a share-based incentive plan that is based on the development of Group's profitability in calendar year 2018. The reward will be paid partly in the company's series A shares and partly in cash in spring 2021. The cash proportion will cover taxes and tax-related costs arising from the reward to a key employee. No reward will be paid if a key employee's employment or service ends before the reward payment date. The maximum amount of this plan corresponding to 160,000 shares will be paid depending on the number of entitled persons at the end of vesting period. For further information, please contact: Kaarina Muurinen, CFO Tel. +358 40 577 5066, [email protected] Distribution Nasdaq Helsinki Key media www.vaisala.com Vaisala is a global leader in environmental and industrial measurement. Building on over 80 years of experience, Vaisala provides observations for a better world. We are a reliable partner for customers around the world, offering a comprehensive range of innovative observation and measurement products and services. Headquartered in Finland, Vaisala employs approximately 1,600 professionals worldwide and is listed on the Nasdaq Helsinki stock exchange. www.vaisala.com www.twitter.com/VaisalaGroup